Redirect to old version of travis for mobile clients

We're planning support for a new mobile client, but for the time being
we will just redirect to the old app.

lib/travis/web/app.rb

@@ -5,6 +5,8 @@ require 'delegate'
 require 'time'
 
 class Travis::Web::App
+  autoload :MobileRedirect, 'travis/web/app/mobile_redirect'
+
   # Simple Rack router that behaves like a hash.
   # Key is the path, value the response.
   class Router < DelegateClass(Hash)
@@ -129,6 +131,7 @@ class Travis::Web::App
       builder.use Rack::Deflater
       builder.use Rack::Head
       builder.use Rack::ConditionalGet
+      builder.use MobileRedirect
       builder.run router
       builder
     end

lib/travis/web/app/mobile_redirect.rb

@@ -0,0 +1,12 @@
+class Travis::Web::App::MobileRedirect < Struct.new(:app)
+  def call(env)
+    request = Rack::Request.new env
+
+    if request.params['mobile'] || env['HTTP_AGENT'] =~ /Mobile|webOS/
+      location = 'https://secure.travis-ci.org' + request.fullpath
+      [301, { 'Content-Type' => 'text/plain', 'Location' => location }, []]
+    else
+      app.call env
+    end
+  end
+end

spec/mobile_redirect_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+describe Travis::Web::App::MobileRedirect do
+
+  describe 'with mobile client' do
+    let(:agent) { 'blah blah Mobile blablah' }
+
+    it 'redirects to secure.travis-ci.org' do
+      get('/foo/bar?baz', {}, 'HTTP_AGENT' => agent).should be_redirect
+      last_response.headers['Location'].should == 'https://secure.travis-ci.org/foo/bar?baz'
+    end
+  end
+
+  describe 'with mobile param' do
+    it 'redirects to secure.travis-ci.org' do
+      get('/foo/bar?baz', mobile: true).should be_redirect
+      last_response.headers['Location'].should == 'https://secure.travis-ci.org/foo/bar?mobile=true&baz'
+    end
+  end
+end